WBJEE · Chemistry · Classification of Elements and Periodicity in Properties
\(\left({ }_{32} \mathrm{Ge}^{76},{ }_{34} \mathrm{Se}^{76}\right) \text { and } \left.{(}_{14} \mathrm{Si}^{30},{ }_{16} \mathrm{S}^{32}\right) \text { are examples of }\)
- A isotopes and isobars
- B isobars and isotones
- C isotones and isotopes
- D isobars and isotopes
Answer & Solution
Correct Answer
(B) isobars and isotones
Step-by-step Solution
Detailed explanation
\({ }_{32} \mathrm{Ge}^{76}\) and \(\mathrm{sq} \mathrm{Se}^{76}\) have the same mass number but different atomic number, so they are isobars. Number of neutrons, in \(_{14} e^{\mathrm{Si}^{30}}=30-14=16\) in \(_{16} e^{\mathrm{Si}^{32}}=32-16=16\) Because of the presence of…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- The nucleus \(^{64}_{29}Cu\) accepts an orbital clectron to yield.WBJEE 2018 Medium
- Identify the correct statement.WBJEE 2013 Easy
- The ease of hydrolysis in the compounds \(\mathrm{CH}_{3} \mathrm{COCl}(\mathrm{I}), \mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}(\mathrm{II})\)
\(\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}(\mathrm{III})\) and \(\mathrm{CH}_{3} \mathrm{CONH}_{2}\) (IV) is of
the orderWBJEE 2018 Medium - Given that \(\begin{array}{c} \mathrm{C}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2} ; \Delta H^{\circ}=-x \mathrm{k} \mathrm{J} \\ 2 \mathrm{CO}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{CO}_{2} ; \Delta H^{\circ}=-y \mathrm{k} \mathrm{J}\end{array}\). The heat of formation of carbon monoxide will beWBJEE 2014 Medium
- A metal (M) forms two oxides. The ratio \(\mathrm{M}: \mathrm{O}\) (by weight) in the two oxides are \(25: 4\) and \(25: 6\). The minimum value of atomic mass of \(M\) isWBJEE 2022 Medium
- In the following electron - dot structure, calculate the formal charge from left to right nitrogen atom; \(\ddot{\mathrm{N}}=\mathrm{N}=\ddot{\mathrm{N}}\)WBJEE 2011 Medium
More PYQs from WBJEE
- The state of hybridization of the central atom and the number of lone pairs over the central atom in \(\mathrm{POCl}_{3}\) areWBJEE 2012 Easy
- Radioactivity of a sample ( \(\mathrm{z}=22\) ) decreases \(90 \%\) after 10 years. What will be the half life of the sample?WBJEE 2010 Medium
- \(P Q\) is a double ordinate of the hyperbola \(\frac{x^2}{a^2}-\frac{y^2}{b^2}=1\) such that \(\triangle O P Q\) is an equilateral triangle, \(O\) being the centre of the hyperbola. Then the eccentricity e of the hyperbola satisfiesWBJEE 2022 Medium
- If the circle \(x^{2}+y^{2}+2 g x+2 f y+c=0\) cuts the three circles \(x^{2}+y^{2}-5=0\) \(x^{2}+y^{2}-8 x-6 y+10=0\) and \(x^{2}+y^{2}-4 x+2 y-2=0\) at the extremities of their diameters, thenWBJEE 2014 Hard
- Let \(A\) and \(B\) be two non-singular skew symmetric matrices such that \(A B=B A\), then \(A^{2} B^{2}\left(A^{\top} B\right)^{-1}\left(A B^{-1}\right)^{\top}\) is equal toWBJEE 2021 Hard
- The specific heat \(C\) of a solid at low temperature shows temperature dependence according to the relation \(C=D T^{3}\), where \(D\) is a constant and \(T\) is the temperature is kelvin. A piece of this solid of mass \(m \mathrm{kg}\) is taken and its temperature is raised from \(20 \mathrm{K}\) to \(30 \mathrm{K}\). The amount of heat required in the process in energy units isWBJEE 2013 Medium